Wet spots and frosting: what they are and when to worry

If you pour soy candles, sooner or later you will see a patch that looks wet against the glass, or a white, crystal-like bloom on top. Both are common, both have known causes, and neither one means the candle is ruined.

What are wet spots?

Wet spots are areas where the wax has pulled away from the glass. Seen through the jar, the gap looks like a damp patch. They happen because wax shrinks as it cools, and in places it lets go of the glass instead of staying stuck to it.

Do wet spots affect how the candle burns?

No. They are cosmetic. The candle burns and smells the same. Many makers add a line to their listings explaining that wet spots are normal in natural wax.

What reduces wet spots?

• Warm, clean jars. Cold or dusty glass gives the wax less to grip. Warming jars slightly before pouring helps a lot.
• Slower cooling. Keep fresh candles away from drafts, open windows and cold counters. Some makers cool them in a closed box.
• Steady storage. Temperature swings during storage and shipping can cause new wet spots in candles that looked perfect when poured.

What is frosting?

Frosting is a thin white crystal growth on the surface or sides of soy wax. It is part of soy’s natural behavior: the wax can slowly form crystals as it sits, especially after temperature changes.

Does frosting mean something went wrong?

Not usually. It does not affect the burn. Heavy frosting can be a sign the wax was poured too hot or cooled unevenly, so it is worth checking your pour temperature against your wax’s published range on the wax specs page.

Can I get rid of frosting?

You can reduce it, but with straight soy you may not remove it completely. Pouring within the recommended temperature, cooling at a steady room temperature and storing finished candles somewhere stable all help. Some blends include additives meant to reduce frosting; check the wax’s description if a perfectly smooth look matters to you.

Can I fix the top of a frosted or bumpy candle?

A heat gun on low, passed briefly over the surface, will melt and re-smooth the top. It will not stop frosting from coming back over time, but it helps for photos and for candles that are about to ship.

What about problems that are not cosmetic?

Tunneling, soot, a mushrooming wick or oil beading on the surface all affect how the candle performs and are worth fixing before you sell. The candle troubleshooter lists each one with its usual causes and the fixes to try first.